Cam for stamp-mills



(No Model.) v

A. RAMAGE. v CAM FOR STAMP MILLS. I

No. 446,693. Patented-Feb. 17, 1891.

INVENTOR t WITNESSES:

ATTORNEY.

STATES PATENT Trice.

CAM FOR STAMP-I-MILL'S.

SPECIFICATION forming part of Letters Patent No. 446,693, dated February 17, 1891. Application filed November 8, 1390. Serial No. 370,731. (No model.)

l T0 aZZ whom it may concern:

Be it known that I, ALEXANDER RAMAGE, a citizen of the United States, residing at Idaho Springs, in the county of Clear Creek and State of Colorado, have invented certainnew and useful Improvements in Cams for Stamp- Mills, of which the following is a specification.

This invention relates to a removable cam for use in stamp-mills or other machines, in which the cam consists of one or more arms projecting from the hub mounted on the shaft.

The object of the invention is to provide a cheap and durable cam of such construction as to admit of being readily removed from the hub.

In the accompanying drawings, illustrating my invention, Figure 1 shows a side view of a cam-hub provided with two cam-arms. Fig. 2 is a side view of one canrarm separate from the hub. Fig. 3 shows two views of the shoe. Fig. 4 is an edge view of the cam-arm. Fig. 5 is a view of the hub.

The letter A designates the revoluble driving-shaft; 15, the cam-hub mounted thereon;

the cam-arm attached to the said hub, but removable therefrom, and D the removable cam-shoe attached to the edge of the said cam-arm. The cam-hub B has two parallel straight faces a. (See Fig. 1.) Each face has a dovetail groove 1) at right angles to the driving-shaft. Each of the cam-arn1s O has a dovetail slide shank c, which fits into the dovetail groove 7) of the hub. Atoue end of the slide-shank is an arm (I, which projects partly over the hub 13, and a bolt or screw 6 passes through a hole in the said arm 61 and into the hub B, and thus secured prevents the slide-shank of the cam-arm from shifting in the dovetail groove Z). The slide-shank has a notch or shoulder f in its inner edge for the reception of a piece of soft wood f, rubber or other suitable material, which prevents the cam-arm C from rattling while in motion. A strengthening-rib 7 extends the entire length of the cam-arm. It will be seen that by the above construction the cam-arm O may be easily removed from the hub B without disturbing the position of the latter on the driving-shaft by merely removing the screw (2 from the hubB and drawing the slide-shank c from the dovetail groove 1) of the hub. Each of the cam-arms O has a removable metal shoe D, which is fastened by means of a screw h at one end and a bolt h atthe other. The head of the bolt is countersunk into the shoe so as to leave a smooth cam-surface. The shoe may be easily removed from the camarm. The cam-shoe D just referred to may be entirely dispensed with, if desired; but its use saves wear direct on the cam. The hub B is secured to the shaft by a key 1' or other suitable means, and this need not be removed should it become necessary to detach the camarms or either of them.

Having described my invention, I claim 1. In a cam for stamp-mills or other machin es, the combination of the hub B, provided with a dovetail-groove b, a cam-arm '0, having a slide-shank c to enter the said dovetail groove 1) of the hub, and means to fasten the arm, as and for the purpose set forth.

2. In a cam for stamp-mills or other machines, the combination of the hub B, provided with a dovetail groove 1), a cam-arm O, having a slide-shank c to enter the said dovetail groove 1) of the hub, and an arm (Z, projecting from the cam-arm and fastened to the hub, as and for the purpose set forth.

3. In a cam for stamp-mills or other machines, the combination of the hub B, provided with a dovetail groove Z), a cam-arm O, having a slide-shank c to enter the said dovetail groove 1) of the hub, said slideshank having on its edge a notch or shoulder for the reception of a piece of Wood or other material, and an arm (Z, projecting from the cam-arm and extending to and upon the hub and fastened thereto.

4. The combination of the driving'shaft, a hub secured on the shaft and having two parallel faces, each provided. with a dovetail groove 7) at right angles to the shaft, cam- ,arms C, each having a slide-shank cto enter the said dovetail grooves of the hub, and means to fasten the arms, as and for the purpose set forth.

In testimony whereof I affix my signature in the presence of two witnesses.

ALEXANDER RAMAGE. \Vitnesses:

II. A. TWINING, DANIEL Down 

